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Method for processing internal threads of blind hole

A technology of internal thread and blind hole, which is applied in the field of mechanical processing, can solve the problems of difficult control of surface roughness, slow turning speed, and high scrap rate, and achieve the effect of controllable surface roughness, fast turning speed, and reduced scrap rate

Inactive Publication Date: 2014-10-15
GUIZHOU AEROSPACE PRECISION PRODS
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AI Technical Summary

Problems solved by technology

However, when machining the internal thread of a blind hole, the thread turning tool enters from the outer opening of the internal thread of the blind hole and ends at the inner groove, and the thread turning tool will damage the bottom surface of the blind hole, making it difficult to control the surface roughness. Slow turning speed, high scrap rate and low production efficiency

Method used

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  • Method for processing internal threads of blind hole
  • Method for processing internal threads of blind hole

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Embodiment Construction

[0011] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0012] A method for machining the internal thread of a blind hole, the steps are as follows: first, the inner hole 3 is turned, the inner groove is turned 2, and the blind hole inner thread 4 is finally machined. The reverse turning method is used to process the internal thread 4 of the blind hole at the groove 2. The thread turning tool 5 will not damage the bottom surface of the blind hole 1. The thread turning tool 5 is positioned by the fixed knife method and can quickly reach the inner groove 2 for processing Turning blind hole internal thread 4, thus improving efficiency and reducing scrap rate.

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Abstract

A method for processing internal threads of a blind hole comprises the following steps: firstly turning an inner hole, then turning an inner groove and finally processing the internal threads of the blind hole, wherein the processing of the internal threads of the blind hole is realized in a manner that a threading tool is fed from the inner groove in a reverse-turning way. According to the method, the internal threads of the blind hole are processed in a manner that the threading tool is fed from the inner groove in a reverse-turning way, so that the threading tool is not collided with and damage the bottom surface of the blind hole, the threading tool is positioned in a fixed-tool manner, and can reach the inner groove to turn the internal threads of the blind hole, thus roughness of the bottom surface of the blind hole can be controlled, the turning speed is high, the efficiency is improved, and the rejection rate is reduced.

Description

technical field [0001] The invention relates to a method for processing blind hole internal threads, which belongs to the technical field of mechanical processing. Background technique [0002] As we all know, the existing blind hole internal thread processing is usually processed by high-speed steel turning tool and low-speed forward machining method, and the internal hole, internal groove, and blind hole internal thread are processed in one clamping. However, when machining the internal thread of a blind hole, the thread turning tool enters from the outer opening of the internal thread of the blind hole and ends at the inner groove, and the thread turning tool will damage the bottom surface of the blind hole, making it difficult to control the surface roughness. The turning speed is slow, the scrap rate is high, and the production efficiency is low. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23G1/00
Inventor 王世敏雷世斌宋庆华
Owner GUIZHOU AEROSPACE PRECISION PRODS
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